Search engine algorithms are used to arrange indexed sites
Introduction
Search engine algorithms are used to arrange indexed sites, depending on the keywords by relevance. Each search engine uses its own algorithms, which also constantly changed and developed. On the algorithms used directly is not known. The operators want to complicate the active influence. The aim of search engine optimization, it is vice versa, to decode the algorithms in whole or in part, to be designed to optimize websites.
The type and number of parameters included in the assessment is very different. The largest number is composed of internal parameters (on-page factors). These include, for example the occurrence of keywords in the title, description, headings, in the ALT text or the relative frequency. A total of probably dozens of internal variables affect the ranking. There are also external parameters (off-page factors) as the anchor text of incoming links or PageRank. All these values are incorporated into the search engine algorithm and the relevance of a result for the respective search terms. The combination of the parameters is done here in complex form. So the best internal optimization may well be dependent on the external optimization.
In practice, the ranking algorithms consist of a number of different algorithms. Thus, for example are the internal parameters of an algorithm combined with a value and the external parameters of a different algorithm to another value. A third algorithm combines the results while the fourth acts as a filter and clears out some results. Again, this distribution is different for different search engines.